Purification of Regenerated Uranium Hexafluoride by Removal of 232,234U in a Centrifuge Cascade with Prescribed Concentration of One of the Isotopes 232,234,235U

Resumo

Schemes are proposed for purifying regenerated uranium hexafluoride by removal of ^232,234U in an optimal centrifuge cascade with prescribed external concentration of one of the isotopes ^232,234,235U. The cascade is optimized according to the criterion of minimum total number of centrifuges. The purification effect is achieved in the waste flow of the cascade when the feed point is shifted toward the product. The number of steps in the cascade is determined by a preliminary calculation of an R-cascade with different key components. The product parameters and the desirable number of the feed step are picked on the basis of the limit ²³⁵U concentration 5–20%. Calculations showing the possibility of cascades with different degrees of purification by removal of ^232,234U were performed.